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Date:      Wed, 21 Apr 2010 12:20:46 +1000
From:      David N <davidn04@gmail.com>
To:        Andrew Reilly <areilly@bigpond.net.au>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: gjournal: what is it good for?
Message-ID:  <k2q4d7dd86f1004201920s2139647aja783e86e266153ca@mail.gmail.com>
In-Reply-To: <20100421011834.GA24928@duncan.reilly.home>
References:  <20100418235428.GC4620@duncan.reilly.home> <20100420234447.GB1737@garage.freebsd.pl> <20100421011834.GA24928@duncan.reilly.home>

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On 21 April 2010 11:18, Andrew Reilly <areilly@bigpond.net.au> wrote:
> Hi Pawel,
>
> Thanks for pointing this out!
>
> On 21/04/2010, at 09:44, Pawel Jakub Dawidek wrote:
>> You can still run full fsck on
>> gjournaled file system, of course, but in regular use, 'fsck_ffs -p'
>> should perform fast fsck.
>
> I think that's the problem: I had assumed that the journal
> replay obviated the need for fsck at all, so when mounting was
> refused I went straight to "fsck -y", which does a full-scan and
> takes just as long as it used to. =A0Since sending that message
> I've been prompted to check the source and now know (!) that I
> still need to =A0run fsck -p. =A0I just haven't had any crashes in
> the mean-time, to give me an opportunity to try that out.
>
> If you have any clues about the journal full with dump -L issue,
> that'd be greatly appreciated. =A0I'm fairly sure I could generate
> a crash if I put the "L" back into my backup scripts...
>
> Cheers,
>
> Andrew
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>

Gjournal on my systems are pretty quick on startup after a power outtage.

What kind of disks are you using? Or what hardware are you using?

Might be the disks are ignoring the BIO_FLUSH.

Regards
David N



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